Flutter Instability of Supported Pipes Conveying Fluid Subjected to Distributed Follower Forces

被引:0
作者
Lin Wang
机构
[1] Huazhong University of Science and Technology,Department of Mechanics
[2] Hubei Key Laboratory for Engineering Structural Analysis and Safety Assessment,undefined
来源
Acta Mechanica Solida Sinica | 2012年 / 25卷
关键词
pipe conveying fluid; distributed follower force; flutter; buckling; instability;
D O I
暂无
中图分类号
学科分类号
摘要
In the past decades, it has been reported that divergence is the expected form of instability for fluid-conveying pipes with both ends supported. In this paper, the form of instability of supported pipes conveying fluid subjected to distributed follower forces is investigated. Based on the Pflüger column model, the equation of motion for supported pipes subjected concurrently to internal fluid flow and distributed follower forces is established. The analytical model, after Galerkin discretization to two degrees of freedom, is evaluated by analyzing the corresponding eigenvalue problem. The complex frequencies versus fluid velocity are obtained for various system parameters. The results show that either buckling or flutter instabilities could occur in supported fluid-conveying pipes under the action of distributed follower forces, depending on the parameter values of distributed follower forces.
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页码:46 / 52
页数:6
相关论文
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